/*
 * Copyright 2022-2024 兮玥(190785909@qq.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.chestnut.config;

import de.codecentric.boot.admin.server.config.AdminServerProperties;
import jakarta.servlet.DispatcherType;
import lombok.RequiredArgsConstructor;
import org.springframework.boot.autoconfigure.security.SecurityProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;
import org.springframework.security.web.csrf.CookieCsrfTokenRepository;
import org.springframework.security.web.csrf.CsrfTokenRequestAttributeHandler;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.UUID;

@RequiredArgsConstructor
@EnableWebSecurity
@Configuration(proxyBeanMethods = false)
public class SecurityConfig {

    private final AdminServerProperties adminServer;

    private final SecurityProperties security;

    @Bean
    protected SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler();
        successHandler.setTargetUrlParameter("redirectTo");
        successHandler.setDefaultTargetUrl(this.adminServer.path("/"));

        http.authorizeHttpRequests((authorizeRequests) -> authorizeRequests //
                .requestMatchers(new AntPathRequestMatcher(this.adminServer.path("/assets/**")))
                .permitAll()
                .requestMatchers(new AntPathRequestMatcher(this.adminServer.path("/actuator/info")))
                .permitAll()
                .requestMatchers(new AntPathRequestMatcher(adminServer.path("/actuator/health")))
                .permitAll()
                .requestMatchers(new AntPathRequestMatcher(this.adminServer.path("/login")))
                .permitAll()
                .dispatcherTypeMatchers(DispatcherType.ASYNC)
                .permitAll() // https://github.com/spring-projects/spring-security/issues/11027
                .anyRequest()
                .authenticated())
                .formLogin(
                        (formLogin) -> formLogin.loginPage(this.adminServer.path("/login")).successHandler(successHandler))
                .logout((logout) -> logout.logoutUrl(this.adminServer.path("/logout")))
                .httpBasic(Customizer.withDefaults());

        http.addFilterAfter(new CustomCsrfFilter(), BasicAuthenticationFilter.class)
                .csrf((csrf) -> csrf.csrfTokenRepository(CookieCsrfTokenRepository.withHttpOnlyFalse())
                        .csrfTokenRequestHandler(new CsrfTokenRequestAttributeHandler())
                        .ignoringRequestMatchers(
                            new AntPathRequestMatcher(this.adminServer.path("/instances"), RequestMethod.POST.name()),
                            new AntPathRequestMatcher(this.adminServer.path("/instances/*"), RequestMethod.DELETE.name()),
                            new AntPathRequestMatcher(this.adminServer.path("/actuator/**"))
                        ));

        http.rememberMe((rememberMe) -> rememberMe.key(UUID.randomUUID().toString()).tokenValiditySeconds(1209600));

        return http.build();

    }

    // Required to provide UserDetailsService for "remember functionality"
    @Bean
    public InMemoryUserDetailsManager userDetailsService(PasswordEncoder passwordEncoder) {
        UserDetails user = User.withUsername(this.security.getUser().getName())
                .password(passwordEncoder.encode(this.security.getUser().getPassword()))
                .roles("USER").build();
        return new InMemoryUserDetailsManager(user);
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}